Feed-water preheater



Feb. 5, 1929. 1,701,262

F. c. HABER FEED WATER PREHEATER Filed Nv. 26, 1926 2 Sheets-Sheet 1 O00O00 O00 O00 O00 O00 O00 Feb. 5, 1929. 1,701,262

F. c. HABER FEED WATER PREHEATER Filed Nov. 26, 1926 2 Sheets-Sheet 2All ' preheater.

Patented Feb. 5, 1929.

were STATES 1,701,262 PATENT OFFICE.

' FRANCIS C. HABER, BRObKLYN, NEW YORK.

FEED-WATER PREHEATEB.

- 7 ,Application filed November 26, 1926'. Serial H0. 159,68

' This invention relates to. a new and useful device in the nature of afeedwater preheater particularly adapted for use in connection withsteam boilers for the purpose of preheating the feedwater supplied to asteam more fully described, claimed and illustrated.

in the accompanying drawings,in which;

F 1 shows a front elevational view of a steam boiler, partly in section,seen as though looking as indicated by the line 1-1 inFig. 2, andequipped with my improved teedwater Fig. 2 shows a verticallongitudinalsectional view taken on the line 2'-2 of Fig. 1.

Fig. 3 shows a'perspective detail view of my improved feedwater'p're'heater.

Fig. t shows an enlarged sectional view taken on the line l.-l of Fig.3. Fig. 5 shows a further development of my improved device. i

Fig. 6 shows an enlarged sectional detail view of the valve forregulating the supply of feedwater.

The shell proper 10, the upper'shellmem bers 11, 12, 13 and 14:,attached thereto in the usual well known manner,'the the box 15, gratebars 16, fire doors 17, the tubes 18 and ash pit 19 are the commonelements of a fire tube boiler such as ordinarily employed to generatesteam. It should be understood that I doinot limit he use of myinvention to steam boilers of the type above referred to and C escribed,but to all classes and types of steam boilers sucn as generallymanufactured and used. As here embodied my improved device comorises awater inlet nine 20 leadin from an convenient source of supply,controlled by a valve 21, the pipe passing through the upper'shellmember 13' to-enter the central lateral opening of an ordinarycommercial T fitting 22. In the end openings of the T fitting 22 areengaged elbows23,'havingtheir opposite ends, directed horizontally andin which are fixed pipes 24 leading to return elbows 25.. Return pipes26 engage in the other openings of the return elbows and extend parallelbelow the same horizontal with intern al threads plane to connect withthe return elbows 27 Similar return pipes 28 engage in the otheropenings ot .the return elbows 27' andcxtend parallel below the samehorizontal plane to connect, with the elbows. 29. In the oppositeopenings of the elbows 29 are engaged nipples 80,,which engage with thevalve casings 40-. In. the coacting openings of the valve casings 4:0are engaged the pipes 32 disposed in parallel below the pipes 28.: Thepipes 82 are provided with caps33,and contain a plurality of relativelysmall perforations 34-, located .or positioned in the upper half portionof the pipes32. f

In order to support this structure, clips 35 are secured to the stayrods 36 carried by the, upper shell niei'bers 11 and 12, and to thepipes "24, 26, 28 and 32, 'maintaining'my im-' 7 proved device at anypreferred height within the spaceattliet'op ofthe steam boiler. so as topermit the pipes 32. to besomewhat below the water level. v i

Inoperation, steam bein generated in the boiler fills the space abovethe water line and v imparts a portion ofits heat to my improved devicesuspended therein. If the valve 21 be opened permitting the inlet offeedwater, the

same flows'through the pipes and fittings arranged symmetrically on eachside and eventually escapes through the perforations in fine spray at ahigh-temperature and adds to the supply of water already int-he boiler.

Referring in particular to Fig. 5 of the cconipanying drawings, theabove mentioned inlet pipe 20 enters the central lateral opening of anordinary commercial flanged Tfit'ting 37. In the end openings of theflangedT fitting 27 are engaged the elbows 23 and similar elbows 38, ofsomewhat smaller size or dimensions, so as to permit a second pair ofthe above described structures tobe attached thereto, as would beadvantageous. in boilers of larger size. I

The valve casings 40 are supported to the shell proper 10. The pipes 32areprovided' 11, at their extremities adj: .tent to the valve housings40, ada to receive the valve proper 42', integral Vliii or attached tothe valve stem 43, having a hand'wheel 44-attached thereto, positionedof the pipes32, adjacent to the valve housing 40, are provided withelongated slots 45,.

"which register with the nipples 30, said'registering being maintainedby the threaded member 46, a set screw or the like, positioned inthreaded apertures of the valve housing 40 and the pipes 32. Theapertures 47 are located in the valve propel 42. A packing gland 48,threadedly attached to the valve housing 4:0, is provided, to hold thepacking 49 in place, so as to prevent leakage of the feedwater.

The above described construction is such as will permit the valve proper4-2, when turned or rotated by the hand-wheel 44, to regulate the amountof feedwater supplied to the steam boiler. It should be'understood thatthe apertures l? in the valve 42 are adapted to permit a predeterminedamount of water to flow into the pipe sections 32 when the valve ispositioned to the right as viewed in Fig. 6. These apertures thusprovide for the passage o'l a minimum amount of water into the pipeextension 82 at all times and when it is desired to increase the supplyof water to the boiler, the valve 4-2 may be moved to the left as viewedin Fig. 6 so as to uncover the slot 45 and permit a direct communicationbetween the nipple and the extension 32. It should also be understood bycontrolling or regulating the flow of water at the lowermost part of thesystem, it is possible to regulate not only the amount of Water that isdischarged into the boiler, but the length of time such Water isretained in the uppermost portion of the feed system where it is subjectto the heat of the steam developed in the boiler.

Having thus described my invention, what I claim as new and desire-toprotect by Letters Patent of the United States is as follows:

A preheater for steam boiler feedwater comprising an upper series ofimperforate pipes disposed above the water level of said boiler adapt-edto convey feedwater therethrough for allowing the same to be heated, apipe extension disposed below the surface of the water in said boilerand communicatively connected with said series of pipes havingperforations therein adapted to discharge 'leedwater into said boilerbelow the surface of the water-therein, a valve casing forming theconnection between said upperseries o'l? pipes and said pipe extension,said pipe extension being disposed at one end insaid valve casing andscrew threaded'internally at said end portion, a valve in said casinghaving apertures therein for permitting a predetermined minimum amountof waterv to flow from said series of pipes to saidfextension andactuating mechanism operatively connected with said valve for adjustingthe position of the same for regulating the flow of liquid to said pipeextension above said predetermined amount. 7

In testimony whereol' I have afiiXed my signature. FRANCIS C. HABERV

